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// -*-C++-*-
// This file is part of the gmod package
// Copyright (C) 1997 by Andrew J. Robinson
#ifdef USE_LOCAL
#include "soundcard.h"
#else
#include <sys/soundcard.h>
#endif
#include <linux/ultrasound.h>
#include "commands.h"
#include "defines.h"
#include "structs.h"
#include "globals.h"
#include "protos.h"
#include "Sample.h"
#include "Sequencer.h"
static unsigned char s3mExtendTab[] =
{CMD_INFO, CMD_GLISSANDO, CMD_FINETUNE, CMD_VIBRA_WAVE, /* S0 S1 S2 S3 */
CMD_TREMOLO_WAVE, CMD_INFO, CMD_INFO, CMD_INFO, /* S4 S5 S6 S7 */
CMD_SET_PAN, CMD_INFO, CMD_INFO, CMD_PATTERN_LOOP, /* S8 S9 SA SB */
CMD_CUT_NOTE, CMD_DELAY_NOTE, CMD_DELAY_PAT, CMD_INFO}; /* SC SD SE SF */
void
cvtXmPlay (int channel, unsigned char *effect, unsigned char *parm)
{
switch (*effect)
{
case CMD_SLIDEUP:
case CMD_SLIDEDOWN:
case CMD_SLIDETO:
case CMD_VIBRATO:
case CMD_PORTANDVOL:
case CMD_VIBRAANDVOL:
case CMD_TREMOLO:
case CMD_VOLSLIDE:
case CMD_FINEVOLUP:
case CMD_FINEVOLDOWN:
case CMD_PANSLIDE:
case CMD_RETRIGVOL:
case CMD_GLOBALVOL_SLIDE:
case CMD_XFINEPORTUP:
case CMD_XFINEPORTDOWN:
if (*parm == 0)
*parm = voices[channel].lastInfo;
else
voices[channel].lastInfo = *parm;
break;
case CMD_GLOBAL_VOL:
if (*parm)
voices[channel].lastInfo = *parm;
// the following check is needed because *parm is an unsigned char
if (*parm >= 64)
*parm = 255;
else if (*parm)
*parm = (*parm * 4) - 1;
break;
default:
if (*parm != 0)
voices[channel].lastInfo = *parm;
if (*effect == CMD_INFO)
{
*effect = 0;
*parm = 0;
}
}
}
void
cvtS3mPlay (int channel, unsigned char *effect, unsigned char *parm)
{
switch (*effect)
{
case 0:
break;
case CMD_VOLSLIDE:
if (*parm == 0)
*parm = voices[channel].lastInfo;
else
voices[channel].lastInfo = *parm;
if ((*parm > 0xf0) && (*parm < 0xff))
{
*effect = CMD_FINEVOLDOWN;
*parm &= 0x0f;
}
else if (((*parm & 0x0f) == 0x0f) && ((*parm & 0xf0) > 0))
{
*effect = CMD_FINEVOLUP;
*parm = (*parm >> 4) & 0x0f;
}
// else if (((*parm & 0x0f) != 0) && ((*parm & 0xf0) != 0))
else if (*parm & 0x0f) // slide down overrides slide up
*parm &= 0x0f;
break;
case CMD_PORTANDVOL:
case CMD_VIBRAANDVOL:
if (*parm == 0)
*parm = voices[channel].lastInfo;
else
voices[channel].lastInfo = *parm;
if (*parm & 0x0f)
*parm &= 0x0f;
break;
case CMD_SLIDEUP:
if (*parm == 0)
*parm = voices[channel].lastInfo;
else
voices[channel].lastInfo = *parm;
if (*parm >= 0xf0)
{
*effect = CMD_FINEPORTUP;
*parm &= 0x0f;
}
else if (*parm >= 0xe0)
{
*effect = CMD_XFINEPORTUP;
*parm &= 0x0f;
}
break;
case CMD_SLIDEDOWN:
if (*parm == 0)
*parm = voices[channel].lastInfo;
else
voices[channel].lastInfo = *parm;
if (*parm >= 0xf0)
{
*effect = CMD_FINEPORTDOWN;
*parm &= 0x0f;
}
else if (*parm >= 0xe0)
{
*effect = CMD_XFINEPORTDOWN;
*parm &= 0x0f;
}
break;
case CMD_ARPEG2:
if (*parm == 0)
*parm = voices[channel].lastInfo;
else
voices[channel].lastInfo = *parm;
*effect = CMD_ARPEG;
break;
case CMD_TREMOR:
case CMD_SLIDETO:
case CMD_VIBRATO:
case CMD_RETRIGVOL:
if (*parm == 0)
*parm = voices[channel].lastInfo;
else
voices[channel].lastInfo = *parm;
break;
case CMD_BREAK:
voices[channel].lastInfo = *parm;
*parm = ((*parm >> 4) & 0x0f) * 10 + (*parm & 0x0f);
break;
case CMD_FINETUNE:
voices[channel].lastInfo = *parm;
*parm &= 0x0f;
if (*parm >= 8)
*parm -= 8;
else
*parm += 8;
break;
case CMD_GLOBAL_VOL:
voices[channel].lastInfo = *parm;
if (*parm > 0)
*parm = (*parm * 4) - 1;
break;
case CMD_EXTENDED:
voices[channel].lastInfo = *parm;
*effect = s3mExtendTab[(*parm & 0xf0) >> 4];
*parm &= 0x0f;
if (*effect == CMD_SET_PAN)
*parm *= 17;
break;
default:
voices[channel].lastInfo = *parm;
}
if (*effect == CMD_INFO)
{
*effect = 0;
*parm = 0;
}
}
int
doCommand(int channel, int command, int parm, int position, int pattern,
struct songInfo *songChar, struct effectInfo *effects )
{
#ifdef USE_X
SEQ_DECLAREBUF();
#endif
int jump = 0;
switch (command)
{
case CMD_JUMP:
jump = MOVE_JUMP;
effects->position = parm;
effects->pattern = 0;
break;
case CMD_BREAK:
jump = MOVE_BREAK;
if (((position + 1) < songChar->songlength) &&
(parm < patternLen[tune[position + 1]]))
effects->pattern = parm;
else
effects->pattern = 0;
break;
case CMD_SET_TICKS:
if (parm)
TICKS_PER_DIVISION (parm);
else
{
#ifdef USE_X
syncTime ();
SEQ_ECHO_BACK (ECHO_SPEED0);
#else
jump = MOVE_EXIT;
#endif
}
break;
case CMD_SET_BPM:
TEMPO (parm, songChar->clockSpeed);
break;
case CMD_DELAY_PAT:
effects->delayNotes = parm;
break;
case CMD_PATTERN_LOOP:
if (parm == 0)
voices[channel].pattern = pattern;
else
{
effects->loopChan = channel;
if (voices[channel].loopTimes == 0)
{
voices[channel].loopTimes = parm;
effects->pattern = voices[channel].pattern;
jump = MOVE_LOOP;
}
else if (--voices[channel].loopTimes > 0)
{
effects->pattern = voices[channel].pattern;
jump = MOVE_LOOP;
}
}
break;
}
return jump;
}
int
playNote (int channel, int position, int pattern, struct noteInfo *pat,
struct songInfo *songChar, struct effectInfo *effects,
struct optionsInfo *options)
{
extern Sample *samples[];
extern Sequencer *seq;
int jump = 0;
int note = pat->note;
unsigned char command = pat->command[1], param = pat->parm1[1];
if (songChar->type == MODULE_S3M)
cvtS3mPlay (channel, &command, ¶m);
else if (songChar->type == MODULE_XM)
cvtXmPlay (channel, &command, ¶m);
seq->resetEffects(channel, (command != CMD_NOP) || note);
if (pat->sample)
seq->sample(channel, samples[pat->sample - 1]);
if (note == NOTE_STOP)
{
seq->keyOff(channel);
note = 0;
}
else if (note && (pat->command[0] != CMD_SLIDETO) &&
(command != CMD_SLIDETO))
seq->note(channel, note, songChar->slideType);
if (!seq->doCommand(channel, pat->command[0], pat->parm1[0], pat->parm2[0],
pat->note, songChar, options))
jump = doCommand(channel, pat->command[0], pat->parm1[0], position,
pattern, songChar, effects);
if (!seq->doCommand(channel, command, param, pat->parm2[1], pat->note,
songChar, options))
jump |= doCommand(channel, command, param, position, pattern, songChar,
effects);
return jump;
}
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